ZHCSOF3G April 2006 – July 2021 TLV320AIC3106
PRODUCTION DATA
请参考 PDF 数据表获取器件具体的封装图。
The TLV320AIC3106 includes support for connection of a digital microphone to the device by routing the digital signal directly into the ADC digital decimation filter, where it is filtered, downsampled, and provided to the host processor over the audio data serial bus.
When digital microphone mode is enabled, the TLV320AIC3106 provides an oversampling clock output for use by the digital microphone to transmit its data. The TLV320AIC3106 includes the capability to latch the data on either the rising, falling, or both edges of this supplied clock, enabling support for stereo digital microphones.
In this mode, the oversampling ratio of the digital mic modulator can be programmed as 128, 64 or 32 times the ADC sample rate, ADCFS. The GPIO1 pin will output the serial oversampling clock at the programmed rate. TLV320AIC3106 latches the data input on GPIO2 as the Left and Right channel digital microphone data. For the Left channel input, GPIO2 will be sampled on the rising edge of the clock, and for the Right channel input, GPIO2 will be sampled on the falling edge of the clock. If a single digital mic channel is needed then the corresponding ADC channel should be powered up, and the unused channel should be powered down. When digital microphone mode is enabled, neither ADC can be used for digitizing analog inputs.
Configuring the digital microphone configuration set up is done by writing to Page 0, Register 107, bits D5-D4, and Register 25, bits D5-D4.